<label>每页
    <select class="input-sm"
            onchange="$('input[name=\'page_size\']').val(this.value);document.forms[0].submit();">
        <option <?php if ($reqPageSize == 10) echo 'selected="selected"'; ?> value="10">10</option>
        <option <?php if ($reqPageSize == 20) echo 'selected="selected"'; ?> value="20">20</option>
        <option <?php if ($reqPageSize == 50) echo 'selected="selected"'; ?> value="50">50</option>
        <option <?php if ($reqPageSize == 100) echo 'selected="selected"'; ?> value="100">100</option>
    </select> 条记录
</label>